Ford f150 2001 4x4 problem, acuator?

My 4x4 didn't work when I bought it! so I messed with it and realized my solenoids were bad, replaced them both and still no bag dang! I then followed my vacuum lines down to the actuator piece that moves when you switch to 4x4, it then worked when I was in 4 high but not 4 low. went inside for little while went back out to go test it then the opposite seemed to happen only 4 low works now

sorry i for got to mention i hit the actuator piece that moves with a screw driver and thats how i got it to worksorry i for got to mention i hit the actuator piece that moves with a screw driver and thats how i got it to work

ok, i will have to do that. do you think the actuator is what the problem really is? or maybe the motor on the TC? Thanksok, i will have to do that. do you think the actuator is what the problem really is? or maybe the motor on the TC? Thanks

anytime you have vacuum controlling something you have issues. That would be my first guess is to check for cracked vacuum lines, then the actuator then the controlsanytime you have vacuum controlling something you have issues. That would be my first guess is to check for cracked vacuum lines, then the actuator then the controls

yeah its kind of a crappy design by ford, but when i check the vacuum lines can i just unplug the 4x4 enagage solenoid line and see if it has vacuum? or would that mess anything up? im new to these 4x4, once again thanks for your help and information!yeah its kind of a crappy design by ford, but when i check the vacuum lines can i just unplug the 4x4 enagage solenoid line and see if it has vacuum? or would that mess anything up? im new to these 4x4, once again thanks for your help and information!

I forgot to mention when I hit the actuator shaft with a screw driver it worked for a little bit 4 low continues to workI forgot to mention when I hit the actuator shaft with a screw driver it worked for a little bit 4 low continues to work

you wont hurt anything by unplugging it and checking for vacuum from the source. Just dont get run over pleaseyou wont hurt anything by unplugging it and checking for vacuum from the source. Just dont get run over please

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sounds like it is loosing vacuum check all the lines for a crack even the engine lines will cause it to loose vacc. pressure. if it is not run to the vacuum reserve canister you may not have enough vacc. to hold the actuator in several times I just run new lines and that helped and not very costly.

Check the switch on the transfercase remove the vacume lines if there is oil in them the switch has to be replaced and the lines should be cleaned out you should also check under the battery tray to make sure the boot is not ripped that controls the leaver to engage the front axel

Pull the kick panel on the passenger side. there is a small box mounted there that is the computer that controls the actuator for the 4wd system. this is notorious for problems due in fact that the connector likes to pull out and away from the module. I had the same problem and the solution is simple.. take a long zip tie and get it between a few of the wires and around the module. tie it in and have a nice day.. it wont come off or try to pop out anymore and you should have no issues getting into 2wd, 4wd h, 4wd L.

Having the same exact problem but with my 1999 escalade. Thought it was the actuator bought a new one installed it transfer case would engage but front end wouldnt lock. Took it out of housing left it plugged in got a friend to go through all the 4wd for me and the plunger never moved out the actuator. Checked my wiring harness which is a four prong ann it had one hot prong like it is suppose to. Traced wires even replaced dash switch same problem. Taking it to local dealership tom to have it checked for codes. I was told it could be the transfercase actuator even though its workin that actuator is what sends power to the front to engage the actuator to lock the differential.

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replace the 4 wheel drive acuator if in 4wd with selector and the wheels are still free then the acuator is bad even tho you 12v the acuator may not be pulling back to lock in the hub for 4 wd. simply replace it as their is a small spring on the acuater that over time becomes week and can no longer hold the presure that is created when it activated.

sounds like a bad starter solenoid. -- you can try and jump from one side of the solenoid to the other and see if the car will start then. or just replace the solenoid with a new one and this will solve your problem. now the solenoid and the starter are one complete unit and need to be replaced together.

im a tech in the bronx and i dealt with the same code for the misfire. burt i realized that there wasnt any power to the coil of #2 cylinder. I replaced the sensor mounted on top of the air filter box, which solved this problem.

I would follow their recommendation as I had the same problem with my car. They unhooked the power to that door and it was fine. The problem was a short in the wiring in the door that was causing the problem. So maybe get them to check the wiring in the door as well.